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A people traffic jam that occurrs in subway tunnels and bus stations. Caused by inconsiderate workaholics walking too slow while their noses are glued to their Blackberry device.
I was late for work because there was a Blackberry Jam getting out of the A train.
by bratina August 30, 2005
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2
A delicious jam made from Blackberries
by missleah97 January 13, 2012
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3
When 3 or more people are in a meeting, not talking to each other, but are all checking, emailing or talking on their blackberries.
We had a few topics we needed to discuss in the departmental meeting, however it turned into a Blackberry Jam
by Tommireed February 19, 2009
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